what size are the injectors in a 6.2L
11-23-2012, 04:05 PM
#4
Thanks but I dont know what bar means. why im asking is my maggie tvs1900 came with pink 0280156030 injectors that are 42lb @ 58psi. Justin told me these are to small for my 6.2l @ 8ib of boost and to put the stock ones back in. He said my stock tune showed my stock injectors were 55 lb. I did find 1 post that said the stock injectors were only 42. I dont think thats right. The stock injectors are part #12609749
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11-24-2012, 01:29 PM
#8
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The 6.2 flex fuel injectors are around 50 pounds per hour at 58psi. I dont know how to get a jpeg of the flow rate vs rail pressure Table in my stock tune but i can tell you 100% that 50#@58psi is what it shows. I'm not sure what the 5.3 flex fuel injectors are but I've heard they are lower. 58psi=4 bar, 43.5psi= 3 bar
Btw....your stock (50#) injectors are also too small for 8psi. When I just had my Whipple with 8psi on stock injectors, I was we'll over 90% (80% is generally considered safe) injector duty cycle at WOT. At 8psi, your actual rail pressure will be closer to 50psi. I have 60# injectors now and I'm still over 90% at WOT. The problem is with the returnless fuel system and the fuel pump control module and you don't even want to start looking in THAT mess, trust me. I gave up and am currently installing a meth injection system to make up for the high duty cycles at full throttle. Do yourself a favor and get some big (80#+) injectors, get your tune corrected for them and be done with it.
Btw....your stock (50#) injectors are also too small for 8psi. When I just had my Whipple with 8psi on stock injectors, I was we'll over 90% (80% is generally considered safe) injector duty cycle at WOT. At 8psi, your actual rail pressure will be closer to 50psi. I have 60# injectors now and I'm still over 90% at WOT. The problem is with the returnless fuel system and the fuel pump control module and you don't even want to start looking in THAT mess, trust me. I gave up and am currently installing a meth injection system to make up for the high duty cycles at full throttle. Do yourself a favor and get some big (80#+) injectors, get your tune corrected for them and be done with it.
11-24-2012, 02:13 PM
#9
80Lb wow. thank you. When Justin did my tune it showed the pink 42lb injectors were at 97% at wot. Im guessing that the 42lb injectors that come with the SC were to small for even 6psi then?
Last edited by JCunningham; 11-24-2012 at 02:18 PM.
